package com.task.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.task.common.R;
import com.task.entity.Employee;
import com.task.service.EmployeeService;
import jakarta.servlet.http.HttpServletRequest;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import java.time.LocalDateTime;

@Slf4j
@RestController
//困住半天 写的添加接口用不了 是因为这里误写成（/employee/）
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    /**
     * 登录
     * @param request
     * @param employee
     * @return
     */
    @RequestMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){
    //        1、对密码进行md5加密处理
        String password =employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

//        2、页面提交的用户名查数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

//        3、判断是否查询到
        if(emp == null){
            return R.error("用户名不存在");
        }
//        4、密码比对
        if(!emp.getPassword().equals(password)){
            return R.error("密码错误");
        }
//        5、判断是否被禁用
        if(emp.getStatus() == 0){
            return R.error("账号已禁用");
        }
//        6、登陆成功，将id存入session并返回登录成功结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //清理session中保存的当前登录用户id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee){
        log.info("新增员工，员工信息：{}",employee.toString());
//        加密密码
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
//        创建时间和更新时间
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
//        获取当前登录用户id
        Long empId = (Long) request.getSession().getAttribute("employee");
        employee.setCreateUser(empId);
        employee.setUpdateUser(empId);
        employeeService.save(employee);
        return R.success("新增员工成功");

    }
    /**
     * 员工信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize, String name){
        log.info("page = {},pageSize = {},name = {}",page,pageSize,name);
        //构造分页构造器
        Page<Employee> pageInfo = new Page<>(page,pageSize);
        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
//        排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);
        //执行查询
        employeeService.page(pageInfo,queryWrapper);

        return R.success(pageInfo);
    }
    /**
     * 根据id修改员工信息
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee  employee){
        log.info(employee.toString());
        Long empId = (Long)request.getSession().getAttribute("employee");
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(empId);
        employeeService.updateById(employee);
        return R.success("修改成功");
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据id查询员工信息...");
        Employee employee = employeeService.getById(id);
        if(employee != null){
            return R.success(employee);
        }
        return R.error("没有查询到对应员工信息");

    }
}
